CVE-2026-108698
- Source
- https://cve.org/CVERecord?id=CVE-2026-108698
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108698.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-108698
- Published
- 2026-10-11T13:25:58Z
- Modified
- 2026-10-13T02:46:26Z
- Severity
-
- 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- hyper-mcp through 0.8.3 OCI Plugin Signature Verification TOCTOU Race Condition
- Details
-
hyper-mcp through 0.8.3 contains a signature verification bypass vulnerability in load_wasm in src/wasm/oci.rs that verifies the Cosign signature of a separately resolved tag rather than the loaded manifest. Attackers controlling registry responses for the tag can serve an unsigned malicious manifest to the loader and a signed one to Cosign, executing unsigned WebAssembly plugins with configured host capabilities.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-367" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108698.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108698.json
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/hyper-mcp-oci-signature-manifest-toctou
- https://nvd.nist.gov/vuln/detail/CVE-2026-108698
- https://www.vulncheck.com/advisories/hyper-mcp-through-0.8.3-oci-plugin-signature-verification-toctou-race-condition
- https://github.com/hyper-mcp-rs/hyper-mcp
- https://github.com/hyper-mcp-rs/hyper-mcp/blob/v0.8.3/src/wasm/oci.rs#L193-L224
- https://github.com/hyper-mcp-rs/hyper-mcp/blob/v0.8.3/src/wasm/oci.rs#L79-L148
Affected packages
Git / github.com/hyper-mcp-rs/hyper-mcp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/hyper-mcp-rs/hyper-mcp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "introduced": "0" }, { "last_affected": "0.8.3" }, { "fixed": "0.8.3" } ], "source": [ "AFFECTED_FIELD", "DESCRIPTION" ] }